Property, Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended							12 Months Ended				12 Months Ended				12 Months Ended				12 Months Ended				12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010 Predecessor	Sep. 30, 2012 Land	Sep. 30, 2011 Land	Sep. 30, 2012 Buildings and leasehold improvements	Sep. 30, 2011 Buildings and leasehold improvements	Sep. 30, 2012 Buildings and leasehold improvements Minimum	Sep. 30, 2012 Buildings and leasehold improvements Maximum	Sep. 30, 2012 Machinery and equipment	Sep. 30, 2011 Machinery and equipment	Sep. 30, 2012 Machinery and equipment Minimum	Sep. 30, 2012 Machinery and equipment Maximum	Sep. 30, 2012 Furniture and fixtures	Sep. 30, 2011 Furniture and fixtures	Sep. 30, 2012 Furniture and fixtures Minimum	Sep. 30, 2012 Furniture and fixtures Maximum	Sep. 30, 2012 Computer equipment	Sep. 30, 2011 Computer equipment	Sep. 30, 2012 Computer equipment Minimum	Sep. 30, 2012 Computer equipment Maximum	Sep. 30, 2012 Transportation equipment	Sep. 30, 2011 Transportation equipment	Sep. 30, 2012 Transportation equipment Minimum	Sep. 30, 2012 Transportation equipment Maximum	Sep. 30, 2012 Construction in progress item	Sep. 30, 2011 Construction in progress
Property, Plant and Equipment
Property, plant and equipment, gross	$ 625,245	$ 529,311		$ 69,745	$ 69,060	$ 232,076	$ 228,443			$ 132,292	$ 128,825			$ 82,285	$ 65,630			$ 25,407	$ 22,585			$ 5,871	$ 5,779			$ 77,569	$ 8,989
Less accumulated depreciation and amortization	(112,566)	(54,739)
Property, plant and equipment, net	512,679	474,572
Depreciation and amortization period								4 years	40 years			3 years	13 years			3 years	10 years			3 years	5 years			3 years	4 years
Number of domestic facilities																										2
Depreciation and amortization of property, plant and equipment	$ 58,311	$ 55,589	$ 47,505